AuditionReview

AuditionReview - Hearing: Review Part 1 1. Sound Scenes 2....

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Hearing: Review Part 1 1. Sound “Scenes” A. Pressure changes 2. Sound as a Physical Stimulus: Pressure changes in air. 1. The speaker’s movement causes pressure changes to propagate through a medium such as air. D. Frequency (of Sine Waves) 2. Sound as a Physical Stimulus: Pressure changes in air. i. Frequency is measured in cycles per second, or Hertz ( Hz ). 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
E. Complex Tones 2. Sound as a Physical Stimulus: Pressure changes in air. i. Complex tones result from the addition of two or more pure tones. E. Complex Tones 2. Sound as a Physical Stimulus: Pressure changes in air. ii. The construction of complex tones from pure tones is call Fourier Synthesis E. Complex Tones 2. Sound as a Physical Stimulus: Pressure changes in air. iii. Harmonics: two stimuli are harmonically related if the frequency of one is a multiple of the frequency of the other. iv. A complex tone can be decomposed into its lowest frequency component (the fundamental) and its harmonics. This is called Fourier Analysis . 2
Background image of page 2
Complex Tones 2. Sound as a Physical Stimulus: Pressure changes in air. v. A graphical depiction of the frequency components in a complex tone and their amplitudes is called the Fourier Spectrum of that tone. A. Loudness: is the perceptual analog of amplitude. But, there is not a one to one correspondence. Two tones may have the same physical intensity but differ in loudness. B. Pitch: is the perceptual analog of frequency. But, there is not a one to one correspondence. Two tones may have the same pitch but differ in their physical structure. C. Timbre: The quality of a tome. Different musical instruments have different timbres, so when we play the same note on different instruments, the notes may have the same pitch and loudness, but sound different. 3. Sound as a Perceptual Response.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/20/2011 for the course PSYC 212 taught by Professor Shahin during the Fall '11 term at McGill.

Page1 / 16

AuditionReview - Hearing: Review Part 1 1. Sound Scenes 2....

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online